LOW FREQUENCY PHONONS IN SINTERED COPPER
نویسندگان
چکیده
منابع مشابه
Low frequency phonons in nanoparticles
The consequence of the phonon confinement on the phonon spectra particularly the low frequency spectra in nanocrystal quantum dots has been investigated. Due to the phonon confinement effect, there appears spheroidal and quadrupolar modes of nanoparticles in the low frequency spectra. The frequency of these modes increases with the decrease of the size of the nanocrystal quantum dot (nanopartic...
متن کاملLow-frequency phonons in carbon nanotubes: A continuum approach
L. Chico,1 R. Pérez-Álvarez,2 and C. Cabrillo3 1Departamento de Física Aplicada, Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, 45071 Toledo, Spain 2Departamento de Física Teórica, Facultad de Física, Universidad de La Habana, 10400 Ciudad Habana, Cuba 3Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Científicas, C/ Serrano 123, 28006 Madr...
متن کاملLifetimes of High Frequency Phonons
We discuss the inhibition of anharmonic spontaneous multiphonon decay by energymomentum conservation and the reduction of isotope scattering by the sharing of ionic motion to permit a frequency window for long-lived transverse acoustic phonons. l.~ntroduction Recent high frequency phonon experiments have revealed anomalously long phonon lifetimes at low temperatures.' Indeed, for phonons genera...
متن کاملDirect observation of low frequency confined acoustic phonons in silver nanoparticles: Terahertz time domain spectroscopy.
Terahertz time domain spectroscopy has been used to study low frequency confined acoustic phonons of silver nanoparticles embedded in poly(vinyl alcohol) matrix in the spectral range of 0.1-2.5 THz. The real and imaginary parts of the dielectric function show two bands at 0.60 and 2.12 THz attributed to the spheroidal and toroidal modes of silver nanoparticles, thus demonstrating the usefulness...
متن کاملPhonons in models for icosahedral quasicrystals : low frequency behaviour and inelastic scattering properties
A detailed study of the low frequency behaviour of the phonon spectrum for 3dimensional tiling models of icosahedral quasicrystals is presented, in commensurate approxima-
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1981
ISSN: 0449-1947
DOI: 10.1051/jphyscol:19816254